hypophosphorous acid[hī′pō fäs′fə rəs, -pə-]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a monobasic acid of phosphorus, HPO: it is a strong reducing agent
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A clear, colorless or slightly yellow liquid, H3PO2, used as a reducing agent.